It is possible to trap the interrupt signal:

# trap ctrl-c and call ctrl_c()
trap ctrl_c INT

function ctrl_c() {
        echo "** Trapped CTRL-C"
}
Command Explanation
trap ‘echo “Shell command here”;’ INT Perform any shell command in the single quotes when the “INT” signal is generated
trap ‘’ INT Ignore “INT” signal (use with caution)
trap - INT Restore the “INT” signal handler to the default action 


trap '{ echo "Hey, you pressed Ctrl-C.  Time to quit." ; exit 1; }' INT
echo "Counting to 5 slowly, press Ctrl-C to interrupt."
for number in 1 2 3 4 5; do
    echo $number
    sleep 1
done

trap '' INT
echo "Counting to 5 again, but pressing Ctrl-C shouldn't work."
for number in 1 2 3 4 5; do
    echo $number
    sleep 1
done

trap - INT
echo "One more time, but Ctrl-C should work again."
for number in 1 2 3 4 5; do
    echo $number
    sleep 1
done
exit 0

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